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Finding the Fourth Proportional to 344,590.20, 515,427.30 and 309,306.60

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Solution

The fourth proportional to 344,590.20, 515,427.30 and 309,306.60 is: 462,651.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    344,590.20 : 515,427.30 = 309,306.60 : x
  2. Step 2: Convert to fraction form
    344,590.20/515,427.30 = 309,306.60/x
  3. Step 3: Cross multiply
    344,590.20x = 515,427.30 × 309,306.60
  4. Step 4: Simplify right side
    344,590.20x = 159,425,065,710.18
  5. Step 5: Solve for x
    x = 159,425,065,710.18/344,590.20
  6. Step 6: Final answer
    x = 462,651.19

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.